Via A Dial-Up Connection To The System's Rs-232 Serial Port - Polycom HDX 4000 Series Administrator's Manual

Administrator's Guide for Polycom HDX Systems

Via a Dial-Up Connection to the System's RS-232 Serial Port

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Closed captioners can provide captions from inside the conference room, or
from a remote location, via a dial-up connection to the serial port of the
Polycom HDX 9000 series, Polycom HDX 8000 series, or Polycom HDX 7000
series system, as shown in the following diagram.
Stenograph
machine
PC with computer-aided
transcription software
To supply closed captions via a dial-up connection:
Ensure that the computer and the Polycom HDX system are configured to
1
use the same baud rate and parity settings.
Do one of the following:
2
— In the local interface, go to System > Admin Settings > General
Settings > Serial Port (select
— In the web interface, go to Admin Settings > General Settings >
Serial Port.
Set the RS-232 Mode to Closed Caption.
3
Establish a dial-up connection between the computer and the Polycom
4
HDX system.
Connect a null modem adapter to the RS-232 serial port.
a
Connect an RS-232 cable to the modem and to the null modem
b
adapter.
Line 21
modem
format
Modem
Phone line
Modem
if necessary).
Polycom
HDX System
RS-232
Serial
Polycom, Inc.